Math Calculators
Percentages, fractions, algebra, and core math.
29 calculators across 5 groups
Basic Math
7 calculatorsPercentage Calculator
Three calculators in one: find X% of Y, find what % X is of Y, and find percent change from X to Y. All formulas shown below so you can verify or learn the math.
Percentage Off Calculator
Enter original price and discount percentage to see final sale price and savings.
Fraction Calculator
Enter two fractions and an operation to get the simplified result, decimal equivalent, and mixed number form.
Ratio Calculator
Enter A and B to simplify A:B to lowest terms and convert it to a fraction, decimal, and percentage.
Average Calculator
Enter any list of numbers to instantly see mean, median, mode, range, and standard deviation.
Exponent Calculator
Enter base and exponent to calculate bⁿ instantly, with scientific notation for large results.
Square Root Calculator
Enter a number to instantly get its square root, cube root, or nth root — plus whether it's a perfect square or cube.
Algebra & Equations
1 calculatorGeometry
3 calculatorsPythagorean Theorem Calculator
Enter two sides of a right triangle to find the third side, angles, area, and perimeter.
Slope Calculator
Enter two coordinate points to calculate slope, line equation, length, midpoint, and angle.
Area Calculator
Select a shape and enter dimensions to calculate area and perimeter.
Statistics & Probability
1 calculatorOther
17 calculatorsLogarithm Calculator — log₁₀, ln, log₂
Enter a number to get log₁₀, ln, log₂, and any custom base logarithm.
Fibonacci Calculator — nth Term & Sequence
Enter n to find the nth Fibonacci number and see the full sequence.
Prime Factorization Calculator
Enter any integer ≥ 2 to find its prime factors, exponential form, and divisor count.
Arithmetic Sequence Calculator
Enter first term, common difference, and number of terms to find the nth term and sum.
Binary to Decimal Converter
Enter a binary, decimal, octal, or hex number to convert it to all other bases instantly.
Scientific Calculator
Enter a value and select a function to compute sin, cos, tan, log, ln, sqrt, factorial, powers, and more.
Percentage Change Calculator
Enter two values to instantly calculate the percentage change, or find what percent one number is of another.
Prime Number Checker
Enter a number to instantly see if it's prime, its prime factorization, and the nearest primes.
GCF & LCM Calculator
Enter two integers to instantly find their GCF (greatest common divisor) and LCM (least common multiple).
GPA Calculator
Enter course grades and credits to calculate your semester and cumulative GPA.
Grade Calculator
Enter scores and max points to calculate your grade percentage and letter grade.
Wind Chill Calculator
Enter temperature and wind speed to calculate wind chill, frostbite risk, and exposure limit.
Roman Numeral Converter
Enter a number (1–3999) or Roman numeral string to convert instantly.
Geometric Sequence Calculator
Enter first term, common ratio, and number of terms to find the nth term and sum.
Scientific Notation Calculator
Enter any number to convert to scientific notation, engineering notation, and see the exponent.
Law of Sines Calculator
Enter two angles and a side (or two sides and an angle) to solve the triangle completely.
Law of Cosines Calculator
Enter three sides (SSS) or two sides and included angle (SAS) to solve the triangle.